miniflare@5.20260820.0-alpha

Major Changes

• #15130 99a1f49 Thanks @emily-shen! - Remove the deprecated hasAssetsAndIsVitest option

  This internal assets testing option is no longer supported.

• #15130 99a1f49 Thanks @emily-shen! - Change R2 local S3 credentials configuration

  R2 bindings now use localDev.experimentalS3Credentials instead of s3Credentials for local S3 endpoint credentials.

Minor Changes

• #14995 59872c4 Thanks @ThomasRubini! - Add connect trigger for raw sockets

  You can now configure a Worker to receive raw socket connections during wrangler dev, delivered directly to the Worker's connect(socket, env, ctx) handler:

  {
    "connect": [{ "protocol": "tcp", "port": 5432 }]
  }

  Each entry opens a listening socket on 127.0.0.1 (or the given address) that forwards incoming connections straight to the Worker, bypassing the local dev HTTP entry point. This requires the experimental compatibility flag. Only "tcp" is supported at the moment.

  @cloudflare/config also supports declaring this trigger via triggers.connect(...), which lowers to the connect field above:

  import { defineWorker, triggers } from "@cloudflare/config";
  
  export default defineWorker({
    triggers: [
      triggers.connect({ protocol: "tcp", port: 5432, address: "127.0.0.1" }),
    ],
  });

• #14735 30c2d47 Thanks @vaishnav-mk! - Add individual and batch Workflow instance deletion to the runtime and SDK.

  • WorkflowInstance.delete() deletes one instance. Self-deletion stops the current execution.
  • env.MY_WORKFLOW.deleteBatch(instanceIds) deletes up to 100 instances and returns { deleted, errors } per input position.
  • wrangler workflows instances delete <name> [id..] deletes instances remotely or with --local; IDs can also come from a JSON array passed with --filename, with a combined limit of 100.

Patch Changes

• #15130 99a1f49 Thanks @emily-shen! - Default local Analytics Engine dataset names in Miniflare

  Analytics Engine dataset bindings without an explicit name now fallback to the worker and binding name as a default.

• #15260 5ae9d5b Thanks @dependabot! - Update dependencies of "miniflare", "wrangler"

  The following dependency versions have been updated:

  Dependency	From	To
  @cloudflare/workers-types	^5.20260815.1	^5.20260816.1
  workerd	1.20260815.1	1.20260816.1

• #15264 4b52975 Thanks @dependabot! - Update dependencies of "miniflare", "wrangler"

  The following dependency versions have been updated:

  Dependency	From	To
  @cloudflare/workers-types	^5.20260816.1	^5.20260819.1
  workerd	1.20260816.1	1.20260819.1

• #15277 ce9b151 Thanks @dependabot! - Update dependencies of "miniflare", "wrangler"

  The following dependency versions have been updated:

  Dependency	From	To
  @cloudflare/workers-types	^5.20260819.1	^5.20260820.1
  workerd	1.20260819.1	1.20260820.1